Welcome to your Edexcel B Modern Genetics Complete set of genetic make up of an individual is called Genome Gene Chromosome DNA Alternative splicing acts as a mechanism of gene regulation gene manipulation transcription translocation Nucleosomes are formed by Wrapping of DNA on Histone proteins Wrapping of RNA on Histone proteins Wrapping of histidine on Histone proteins Wrapping of chhromosome on Histone proteins The type of potency not known in stem-cell research is Autopotency Totipotency Multipotency Pluripotency Epigenetic modifications can result in the transformation of totipotent to pluripotent stem cells totipotent to multipotent stem cells multipotent to pluripotent stem cells pluripotent to totipotent stem cells Gene guns can be used as vectors for recombinant technology vectors for DNA Ligase enzyme vectors for plasmid vectors for influenza Studying and modeling of different human diseases is based on Knockout mice Knockdown mice Sterile mice White mice One of the disadvantages of GM crops are genes resistant to antibiotics herbicide resistance lower production lower shelf-life Stem cells that can produce any type of cell are described as Totipotent Multipotent Pluripotent Unipotent The ability of stem cells to differentiate into any kind of cell is called totipotency pluripotency unipotency multipotency A part of a DNA-containing structural gene, promoter and regulator is called operon cistron hapten chromatid Select the correct order of DNA fingerprinting. Isolation, fragmentation, separation, comparison Fragmentation, separation, comparison, isolation Isolation, comparison, separation, fragmentation Isolation, fragmentation, comparison, separation Which is not a method of producing DNA fragments? Examination of an electropherogram. Conversion of mRNA to complementary DNA (cDNA) using reverse transcriptase. Cutting the gene in a 'gene machine'. Using restriction enzymes to cut the DNA into fragments. Why is splicing not required in prokaryotes? Prokaryotes don't have introns Prokaryotes don't have a nucleus. Prokaryotes don't have mRNA Prokaryotes don't have tRNA Identify the parts that get removed during post-transcriptional modifications Introns Extrons Exons pre-mRNA In the procedure of PCR, What are the temperature conditions maintained for binding of DNA primers with DNA strands? Heating to 95 °C followed by cooling to 55 °C Maintaining 72 °C throughout Cooling to 15 °C followed by heating to 55 °C Alternative cycles of heating & cooling at 65 °C and 35 °C Which of the following is not a factor for determining Time of Death through forensics Body colour Muscle contraction Identifying life stage of insects colonising the body Body temperature
